Fuzz the compiler with a non-trivial code but not overly complex

### Motivation
To fill the gap between manually written Wasm (too simple) and Rust programs using the malloc (too complex to debug) in our tests. We need something in the middle to cover a non-trivial control flow and memory ops (byte vs. word memory addressing), etc.

### Implementation details
Generate the Wasm code with `wasm-smith`, compile it to MASM and run them both, comparing the runtime state (stack, memory) afterward.